Public Water Systems
7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Inn at Park Winters | Winters, CA | 42 | 2 | - |
| Pavestone | Winters, CA | 42 | 117 | - |
| Hartley Mutual Water System | Chico, CA | 41 | 11 | - |
| Sunset Moulding Chico | Chico, CA | 41 | 0 | - |
| Bay Standards | Brentwood, CA | 41 | 5 | - |
| Fresno Memorial Gardens | Fresno, CA | 41 | 0 | - |
| Langtry Farms | Middletown, CA | 41 | 16 | - |
| Henry Miller Reclamation District | Dos Palos, CA | 41 | 0 | - |
| Brandon Creek Mws | Carmel, CA | 41 | 148 | - |
| Fantesca Winery | St. Helena, CA | 41 | 20 | - |
| Haynes Board & Care Home | Lodi, CA | 41 | 17 | - |
| Angelo Lane Water Company | Gilroy, CA | 41 | 19 | - |
| Oak Valley Acres P.O.A. | Yreka, CA | 41 | 12 | - |
| Zichichi Winery | Healdsburg, CA | 41 | 8 | - |
| Foothill Apartments | Porterville, CA | 41 | 10 | - |
| Caltrans Visalia Maintenance Station | Fresno, CA | 41 | 31 | - |
| Zone 7 Water Agency | Livermore, CA | 40 | 6 | - |
| Sutter Pines MHP | Sutter Creek, CA | 40 | 7 | - |
| Ione Band of Miwok Indians | Plymouth, CA | 40 | 9 | - |
| Mountain Village Homeowner's Assoc | Forest Ranch, CA | 40 | 81 | - |
| Pg&e: Philbrook Dam | Chico, CA | 40 | 2 | - |
| Crain Park Water System | Paradise, CA | 40 | 0 | - |
| Richmond Hunting Club-Maxwell | Pleasington, CA | 40 | 4 | - |
| Echo Road Group Water Assoc | Oakland, CA | 40 | 15 | - |
| J R Simplot Company | Helm, CA | 40 | 41 | - |
| Cove Island Resort | Fresno, CA | 40 | 29 | - |
| Four Bar C Farms | Fresno, CA | 40 | 9 | - |
| Pg&e Helms Support Facility | Auberry, CA | 40 | 48 | - |
| Open Sky Ranch | Kingsburg, CA | 40 | 1 | - |
| Country Leisure Mobile Estates | Oakdale, CA | 40 | 1 | - |
| Kneeland School | Kneeland, CA | 40 | 12 | - |
| Gold Rock Ranch | Winterhaven, CA | 40 | 60 | - |
| Imperial Lakes Inc. | Alpine, CA | 40 | 21 | - |
| Calvary Chapel Church | El Centro, CA | 40 | 6 | - |
| Deep Springs College | Dyer, CA | 40 | 17 | - |
| Darwin Community Service District | Darwin, CA | 40 | 76 | - |
| Granite Construction Water System | Bakersfield, CA | 40 | 23 | - |
| Four Winds Water System | Bakersfield, CA | 40 | 78 | - |
| Riverview Homeowners Association | Bakersfield, CA | 40 | 33 | - |
| Hasson O S | Bakersfield, CA | 40 | 20 | - |
| Wall Water | Nice, CA | 40 | 26 | - |
| Usfs-Middle Creek Cg | Upper Lake, CA | 40 | 24 | - |
| Clear Creek Latter Day Saints Church | Reno, CA | 40 | 3 | - |
| Lnf-Eagle Lake Ranger Station | Susanville, CA | 40 | 8 | - |
| Johnstonville Water System | Susanville, CA | 40 | 16 | - |
| Coarsegold Self Serve | Coarsegold, CA | 40 | 37 | - |
| The Village | Coarsegold, CA | 40 | 16 | - |
| Black Hawk Lodge | Coarsegold, CA | 40 | 27 | - |
| Pg&e Oakhurst Service Center | San Ramon, CA | 40 | 20 | - |
| Farmers Market | Madera, CA | 40 | 16 | - |